Network Working Group B. Claise, Ed.
Request for Comments: 5476 A. Johnson
Category: Standards Track Cisco Systems, Inc.
J. Quittek
NEC Europe Ltd.
March 2009
Packet Sampling (PSAMP) Protocol Specifications
Status of This Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
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Claise, et al. Standards Track [Page 1]RFC 5476 PSAMP Protocol Specification March 2009Abstract
This document specifies the export of packet information from a
Packet SAMPling (PSAMP) Exporting Process to a PSAMP Collecting
Process. For export of packet information, the IP Flow Information
eXport (IPFIX) protocol is used, as both the IPFIX and PSAMP
architecture match very well, and the means provided by the IPFIX
protocol are sufficient. The document specifies in detail how the
IPFIX protocol is used for PSAMP export of packet information.
Table of Contents
1. Introduction ....................................................3
1.1. Conventions Used in This Document ..........................3
2. PSAMP Documents Overview ........................................4
3. Terminology .....................................................4
3.1. IPFIX Terminology ..........................................4
3.2. PSAMP Terminology ..........................................5
3.2.1. Packet Streams and Packet Content ...................5
3.2.2. Selection Process ...................................6
3.2.3. Reporting ...........................................7
3.2.4. Metering Process ....................................8
3.2.5. Exporting Process ...................................8
3.2.6. PSAMP Device ........................................8
3.2.7. Collector ...........................................8
3.2.8. Selection Methods ...................................9
3.3. IPFIX and PSAMP Terminology Comparison ....................11
3.3.1. IPFIX and PSAMP Processes ..........................11
3.3.2. Packet Report, Packet Interpretation, and
Data Record ........................................12
4. Differences between PSAMP and IPFIX ............................12
4.1. Architecture Point of View ................................12
4.2. Protocol Point of View ....................................14
4.3. Information Model Point of View ...........................14
5. PSAMP Requirements versus the IPFIX Solution ...................14
5.1. High-Level View of the Integration ........................15
6. Using the IPFIX Protocol for PSAMP .............................16
6.1. Selector ID ...............................................17
6.2. The Selection Sequence ID .................................17
6.3. The Exporting Process .....................................17
6.4. Packet Report .............................................17
6.4.1. Basic Packet Report ................................17